rust/library/compiler-builtins/libm

libm

A port of MUSL's libm to Rust.

Goals

The short term goal of this library is to enable math support (e.g. sin, atan2) for the wasm32-unknown-unknown target (cf. rust-lang-nursery/compiler-builtins). The longer term goal is to enable math support in the core crate.

Already usable

This crate is on crates.io and can be used today in stable #![no_std] programs like this:

#![no_std]

extern crate libm;

use libm::F32Ext; // adds methods to `f32`

fn foo(x: f32) {
    let y = x.sqrt();
    let z = libm::truncf(x);
}

Not all the math functions are available at the moment. Check the API docs to learn what's currently supported.

Contributing

Please check CONTRIBUTING.md

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.